paths = [ [(0.0, 0.0), (10.0, 0.0), (10.0, 10.0), (0.0, 10.0)], [(2.0, 2.0), (8.0, 2.0), (8.0, 8.0), (2.0, 8.0)], [(4.0, 4.0), (6.0, 4.0), (6.0, 6.0), (4.0, 6.0)], ] out = polygon(paths).extrude(10)